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Cheap flights from Phoenix Sky Harbor Intl Airport to Seattle from £85

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 13/10. Fares are subject to change and may not be available on all flights or dates of travel.
PHX — SEA
16 Jul — 23 Jul1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Phoenix Sky Harbor Intl to Seattle/Tacoma Intl are usually found in January or February, booked 62 days in advance, depart on a Thursday or Tuesday and return on a Monday

Cheap flight deals from Sky Harbor Intl to Seattle

Enter your travel dates to find the best prices.

Cheapest flights from Sky Harbor Intl to Seattle
Explore the most affordable flight options available from Sky Harbor Intl to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 16 June 2026.

Wed 2/915:45
PHX
-
SEA
1 stop5h 15m
Southwest
Tue 8/916:10
SEA
-
PHX
1 stop4h 45m
Southwest
Deal found 11/6£147
Wed 9/915:35
PHX
-
SEA
1 stop4h 40m
Southwest
Wed 16/905:55
SEA
-
PHX
2 stops6h 45m
Southwest
Deal found 11/6£148
Wed 16/912:55
PHX
-
SEA
2 stops7h 20m
Southwest
Wed 23/912:00
SEA
-
PHX
1 stop4h 55m
Southwest
Deal found 11/6£152
Thu 20/821:45
PHX
-
SEA
Nonstop2h 55m
Southwest
Wed 9/912:40
SEA
-
PHX
1 stop4h 55m
Southwest
Deal found 11/6£154
Mon 17/812:12
PHX
-
SEA
Nonstop3h 11m
Delta
Mon 31/811:50
SEA
-
PHX
Nonstop3h 14m
Delta
Deal found 11/6£160
Fri 21/806:59
PHX
-
SEA
Nonstop3h 06m
Delta
Tue 25/808:25
SEA
-
PHX
Nonstop2h 52m
Delta
Deal found 11/6£161
Wed 19/818:15
PHX
-
SEA
Nonstop3h 00m
Southwest
Sun 23/821:25
SEA
-
PHX
Nonstop2h 55m
Southwest
Deal found 11/6£162
Thu 10/908:00
PHX
-
SEA
1 stop5h 25m
Southwest
Mon 14/906:15
SEA
-
PHX
Nonstop2h 45m
Southwest
Deal found 11/6£168
Fri 21/821:45
PHX
-
SEA
Nonstop2h 55m
Southwest
Tue 25/806:25
SEA
-
PHX
1 stop7h 15m
Southwest
Deal found 11/6£168

Find flight deals from Sky Harbor Intl to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Sky Harbor Intl (PHX) to Seattle (SEA). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 16 June 2026.

Round-trip from

£147

One-way from

£85

Popular in

June

Cheapest in

January

Average price

£200
Southwest
  • Southwest
  • 2/9-8/9
  • 2 total stops
  • 10h 00m total
  • Phoenix to Seattle
Search Deals
Southwest
  • Southwest
  • 13/10
  • 2 total stops
  • 7h 10m total
  • Phoenix to Seattle
Search Deals
Highest demand for flights based on searches. 21% potential increase in price (£30 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£4 potential savings vs. average return price).
Search Deals
Average for round-trip flights in June 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Sky Harbor Intl to Seattle that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 16 June 2026.
Use the filters below to find and compare flights from Phoenix Sky Harbor Intl Airport to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

PhoenixSeattle

PHX - SEA

PHXSEA

Phoenix Sky Harbor Intl

Wed 2/9

15:45-21:00

1 stop5h 15m

Seattle/Tacoma Intl

Tue 8/9

16:10-20:55

1 stop4h 45m

£147

PhoenixSeattle

PHX - SEA

PHXSEA

Phoenix Sky Harbor Intl

Wed 30/9

12:05-19:10

1 stop7h 05m

Seattle/Tacoma Intl

Sat 3/10

07:35-10:30

Nonstop2h 55m

£154

PhoenixSeattle

PHX - SEA

PHXSEA

Phoenix Sky Harbor Intl

Fri 4/9

12:12-15:23

Nonstop3h 11m

Seattle/Tacoma Intl

Tue 8/9

08:25-11:22

Nonstop2h 57m

£162

PhoenixSeattle

PHX - SEA

PHXSEA

Phoenix Sky Harbor Intl

Fri 4/9

20:51-23:59

Nonstop3h 08m

Seattle/Tacoma Intl

Tue 8/9

07:18-10:28

Nonstop3h 10m

£184

PhoenixSeattle

PHX - SEA

PHXSEA

Phoenix Sky Harbor Intl

Fri 11/9

20:51-23:59

Nonstop3h 08m

Seattle/Tacoma Intl

Mon 14/9

07:18-10:28

Nonstop3h 10m

£191

PhoenixSeattle

PHX - SEA

PHXSEA

Phoenix Sky Harbor Intl

Fri 14/8

15:55-21:50

1 stop5h 55m

Seattle/Tacoma Intl

Sat 22/8

11:35-19:10

2 stops7h 35m

£193

PhoenixSeattle

PHX - SEA

PHXSEA

Phoenix Sky Harbor Intl

Wed 12/8

15:13-20:35

1 stop5h 22m

Seattle/Tacoma Intl

Sun 16/8

20:50-23:49

Nonstop2h 59m

£205

PhoenixSeattle

PHX - SEA

PHXSEA

Phoenix Sky Harbor Intl

Wed 8/7

06:59-10:05

Nonstop3h 06m

Seattle/Tacoma Intl

Thu 9/7

20:30-23:33

Nonstop3h 03m

£206

PhoenixSeattle

PHX - SEA

PHXSEA

Phoenix Sky Harbor Intl

Tue 4/8

17:42-20:48

Nonstop3h 06m

Seattle/Tacoma Intl

Tue 11/8

13:40-16:34

Nonstop2h 54m

£206

PhoenixSeattle

PHX - SEA

PHXSEA

Phoenix Sky Harbor Intl

Thu 6/8

21:45-00:40

Nonstop2h 55m

Seattle/Tacoma Intl

Tue 11/8

13:45-16:55

Nonstop3h 10m

£206

Flights are sorted by cheapest return flights first.

Deals found on 15/6

Showing 1-10 of 23 resultsSorted by cheapest first
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2
3

Best time to book a flight from Sky Harbor Intl to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Sky Harbor Intl with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Phoenix Sky Harbor Intl Airport to Seattle

How far ahead should I book a flight from Phoenix Sky Harbor Intl Airport to Seattle?

The price you pay for your flight from Phoenix Sky Harbor Intl Airport to Seattle may vary depending on when you book. For the best chance of a lower fare, look to book 61 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from Phoenix Sky Harbor Intl Airport to Seattle?

Currently, January is the cheapest month in which you can book a flight from Phoenix Sky Harbor Intl Airport to Seattle (average of £98). Flying from Phoenix Sky Harbor Intl Airport to Seattle in June is currently the most expensive (average of £200). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from PHX to SEA?

Find hourly flight availability from Sky Harbor Intl to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 16 June 2026.

Unlike in the afternoon, when flights are generally more expensive, you can save up to 79% on flights from Phoenix Sky Harbor Intl Airport to Seattle by exploring options for tickets in the morning.

How much does it cost for a return flight from Phoenix Sky Harbor Intl Airport to Seattle?

Reviews of airlines servicing Seattle

Get insights into the airlines that provide service to Seattle. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Seattle. Reviews last updated 16 June 2026.
Read through reviews of airlines operating flights from Phoenix Sky Harbor Intl Airport to Seattle, such as Alaska Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
7.9
Good
12,522 reviews
Check prices

Boarding

8.1

Entertainment

7.0

Crew

8.5

Food

7.1

Overall

7.9

Comfort

7.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Jun 2026

RDU - SEA

There was almost a 2 hour delay after arriving before our next flight. Also my husband needed a wheelchair and it seemed hard to get help.
Alaska Airlines
7.9
Good
12,522 reviews
Alaska Airlines
7.9
Good
12,522 reviews
Check prices

Boarding

8.1

Entertainment

7.0

Crew

8.5

Food

7.1

Overall

7.9

Comfort

7.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Jun 2026

RDU - SEA

There was almost a 2 hour delay after arriving before our next flight. Also my husband needed a wheelchair and it seemed hard to get help.

Related info for your journey

Find useful and relevant information for your journey from Sky Harbor Intl to Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Seattle from Phoenix Sky Harbor Intl?

    For a flight from Phoenix Sky Harbor Intl to Seattle, you will be flying into Seattle/Tacoma Intl. Seattle/Tacoma Intl (SEA) is just 11.4 mi from the center of the city. Seattle/Tacoma Intl is the only Seattle airport and it handles 35 inbound flights from Phoenix Sky Harbor Intl per day. 1 airline has flights to Seattle/Tacoma Intl from Phoenix Sky Harbor Intl on a regular basis.

  • How long is the flight from Phoenix Sky Harbor Intl Airport to Seattle?

    Airlines like Southwest and Alaska Airlines fly from Phoenix Sky Harbor Intl Airport to Seattle in about 3h 10m. The time it takes to get you to your destination can typically vary by up to 2h 05m. Phoenix Sky Harbor Intl Airport and Seattle are separated by a distance of 1107 mi. Both multi-stop and direct flights can be found to your destination and back.

  • What is the cheapest airline to fly from Phoenix Sky Harbor Intl Airport to Seattle round-trip?

    According to our current data, Alaska Airlines (£149), offers the cheapest pricing from Phoenix Sky Harbor Intl Airport to Seattle. You may be able to fly from Phoenix Sky Harbor Intl Airport to Seattle for 3% less than the average price by searching for this airline.

  • What are the most reliable airlines from Phoenix Sky Harbor Intl Airport to Seattle?

    Consider Icelandair (98%), Air France (97%) or Korean Air (95%) when booking your flight. These represent the most reliable airlines when flying from Phoenix Sky Harbor Intl Airport to Seattle.

  • Can I find deals for flights from Sky Harbor Intl to Seattle that include hotel bookings?

    Yes. In addition to deals on Sky Harbor Intl to Seattle flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Sky Harbor Intl to Seattle?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Sky Harbor Intl to Seattle.

  • Can I find deals for business class flights from Sky Harbor Intl to Seattle?

    Yes. Cheapflights offers flight deals from Sky Harbor Intl to Seattle by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Phoenix Sky Harbor Intl Airport to Seattle?

    Currently, January is the cheapest month in which you can book a flight from Phoenix Sky Harbor Intl Airport to Seattle (average of £98). Flying from Phoenix Sky Harbor Intl Airport to Seattle in June is currently the most expensive (average of £200). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Tacoma
Federal Way
SeaTac

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Top airline flying from Sky Harbor Intl to Seattle

Discover the top airline that operate flights from Sky Harbor Intl to Seattle. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 16 June 2026.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest£149Average£240FlexibilityNo cancel feeOn-time75%
Search Alaska Airlines flights

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How does Cheapflights help users find flights from Sky Harbor Intl to Seattle?

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Can Cheapflights find flights from Sky Harbor Intl to Seattle with no change fees?

Yes, we can. To see specific flights from Sky Harbor Intl to Seattle with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from Sky Harbor Intl to Seattle become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Seattle from Sky Harbor Intl today and book when prices fit your budget.

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